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发明名称
PRINTING PUNCH MECHANISM
摘要
申请公布号
CA304223(A)
申请公布日期
1930.09.23
申请号
CAD304223
申请日期
申请人
THE ACCOUNTING AND TABULATING MACHINE CORPORATION
发明人
WILLIAM WALTER LASKER
分类号
主分类号
代理机构
代理人
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